Key-hole guard



(ModeL) J. P. WILKINSON.

KEY HOLE GUARD.

.No. 282,018. Patented July 24, 1883.

WITNESSES 5 WW 1 BY JAM ATTORNEYS.

N. PETERS. FMDl-Hnmpher. Wuh'mghm. D. C.

- UNITED STATES PATENT OFFICE.

JOHN P. WILKINSON, or. ABBEVILLE, MISSISSIPPI.

KEY-HOLE GUARD. ,j

SPECIFICATION forming part of Letters Patent No. 282,018, dated July 2 4,'1883.

Application filed October 7, 1882. (Model.)

To all whom it may concern.-

Be it known that I, JOHN 1?..WVILKINSON, of Abbeville, in the county of Lafayette and State of Mississippi, have invented a new and Improved Key-Hole Guard for Locks, of which the following is a full, clear, and exact description.

My invention consists of a sliding block in the lock-case equal in thickness to the space between the plates of the lock-case, and arranged to slide forward and backward by means of a thumb-bit extending out of a slot in the bottom or side edge of the case, the block being so fitted that the side and edge plates of the lock form the guides or keepers for it, and the thumb-bit being arranged so that the lock may be used either on right-hand or left-hand doors without change or alteration, and in the case of locks requiring the guard to be shifted vertically the thumb-bit is contrived for locking the guard in the uppermost position, all as hereinafter fully described.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of a lock provided with my improved key-hole guard as arranged for locking the guard by the thumbbit, the front plate of the lock being removed. Fig. 2 is a plan view of the bottom edge of Fig. 1. Fig. 3 is a section of Fig. 2 on line 90 m. Fig. 4 is a side elevation of a lock with a guard, as arrangedwithout the locking contrivance of the thumb-bit, the plate of the case being moved. Fig. 5 is a section of Figs. 4

. and 6 on the line y y of Fig. 6, and Fig. 6 is a bottom view of Fig. 4.

a represents the guard for the key-hole b, to be located inside of the case of the lock, so as to be shifted along in front of the keyhole or away from it, as required, by means of a thumb bit, 0, extending through a slot, d, of the bottom or side edge plate, 6, of the lock, the said block being equal in thickness to the space between the front and'back plates of the lockcase, so that it cannot be pushed back away I from the outside plate, and so that it does not require the application of guides or other devices inside of the lock to keepit up to its is employed to stop the key-hole.

When the guard is arranged to slide along the bottom edge of the loek-case, itwill not require any fastening device to keep it in front of the key-hole; but in case the lock is to be placed uprightthat is to say, so that the tical side of the lock-case-then I make the thumb-bit to turn in the block, and make a wide notch, f, at the top of the slot, in which to turn the bit 0 as a button, to secure the guard. The same or any approved method desired,when it slides along the bottom of the case, the guard being thus adapted for both vertical and horizontal adjustment along and between the lock side plates, to adapt it for use with any style of rim-lock.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. The combination, with a lock-case, of a key-hole guard consisting of a sliding block,

a, fitting between the plates of the lock, to be guided and supported by them, and having a thumb-bit forming a button to lock the guard specified.

JOHN P. WILKINSON. WVitnesses:

B. F. HoUsroN, J OHN R. BROWN- plaee, as must be provided when a thin plate guard is required to slide up and down averin the notch f of the slot (Z, substantially as of fastening the guard may be employed, if 

